625123655 has 16 divisors (see below), whose sum is σ = 850372320. Its totient is φ = 437332608.

The previous prime is 625123651. The next prime is 625123661. The reversal of 625123655 is 556321526.

It is a cyclic number.

It is not a de Polignac number, because 625123655 - 2² = 625123651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625123651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251852 + ... + 254321.

It is an arithmetic number, because the mean of its divisors is an integer number (53148270).

Almost surely, 2^625123655 is an apocalyptic number.

625123655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

625123655 is a deficient number, since it is larger than the sum of its proper divisors (225248665).

625123655 is a wasteful number, since it uses less digits than its factorization.

625123655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506210.

The product of its digits is 54000, while the sum is 35.

The square root of 625123655 is about 25002.4729776876. The cubic root of 625123655 is about 855.0443555070.

The spelling of 625123655 in words is "six hundred twenty-five million, one hundred twenty-three thousand, six hundred fifty-five".